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rstredway7693
11.07.2019 •
Mathematics
The scatterplot shown includes the (blue) least-squares regression line, whose equation is y = .975 + .005x, where y is calories (in thousands) and x is years after 1960. choose the correct statement. a.consumption is increasing at a rate of 5 calories per year. b.consumption is increasing at a rate of .5 calories per year. c.consumption is increasing at a rate of 50 calories per year. d.consumption is increasing at a rate of .05 calories per year.
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Ответ:
a. Consumption is increasing at a rate of 5 calories per year.
Step-by-step explanation:
Given: The scatter-plot shown includes the (blue) least-squares regression line, whose equation is
, where y is calories (in thousands) and x is years after 1960.
Here, the slope of the line = 0.05 thousand=![0.005\times1000=5](/tpl/images/0078/2124/b937b.png)
We know that the slope of the line tells about the rate of change of function y with respect to x (independent variable).
Since, the slope of the given line is positive then the dependent variable increase with respect to the independent variable.
Therefore the consumption of calories is increasing at a rate of 5 calories per year.
Ответ:
7x7=4 so if u carry the 9 it will be 33